The field emission properties of single-walled carbon nanotubes deposited by chemical vapour deposition on plane substrates and on wires have been investigated. The good emitting performances of the nanotubes are promising for the assembling of robust and efficient cold cathodes, and in particular for the use as an electron source for X-ray production. Tiny electron sources have been fabricated by coating metal wires (W, 300 mu m diameter) with nanotubes. To assess the efficiency of such nanotube-based cathodes for generating X radiation, a prototype X-ray tube has been fabricated. Preliminary measurements of X-ray emission obtained with such a device are presented.
Carbon Nanotube Cold Cathodes for Miniature X-Ray Tube / Sessa, V.; Ciorba, Alessandro; Fiori, A.; Lucci, M.; Orlanducci, S.; Terranova, M. L.; Cappuccio, G.; Hampai, Dariush; Rossi, M.. - STAMPA. - 6634:(2007), pp. 66341L-1-66341L-9. (Intervento presentato al convegno International Conference on Charged and Neutral Particles Channeling Phenomena II - Channeling 2006).
Carbon Nanotube Cold Cathodes for Miniature X-Ray Tube.
CIORBA, ALESSANDRO;HAMPAI, DARIUSH;M. ROSSI
2007
Abstract
The field emission properties of single-walled carbon nanotubes deposited by chemical vapour deposition on plane substrates and on wires have been investigated. The good emitting performances of the nanotubes are promising for the assembling of robust and efficient cold cathodes, and in particular for the use as an electron source for X-ray production. Tiny electron sources have been fabricated by coating metal wires (W, 300 mu m diameter) with nanotubes. To assess the efficiency of such nanotube-based cathodes for generating X radiation, a prototype X-ray tube has been fabricated. Preliminary measurements of X-ray emission obtained with such a device are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
